20pcs Hand Tap and Die Set Screw Thread Reamer M3-M12 Twist Drill Bit Tool Kit
MaterialMade of No. 45 steel, bearing steel, and high-speed steel.The thread is clear and sharp, the size is standard, the cutting is sharp, and the tapping is labor-saving. Multiple chip holes for smooth chip removal | DesignThe knurled design on both ends of the wrench is effective in anti-slip and more convenient to use. | Easy to useThis screw is adjustable, allows you to quickly change dies, and has high efficiency. | FeatureTap screws are quick to make taps with standard pitch. |